Coming off the heels of the PBS documentary and all the coverage from ESPN national on the book 'League of Denial', co-author Steve Fainaru joined joined us today on SportsTalk to talk about the book.

Fainaru, a Pulitzer Prize winner, along with his brother Mark Fainaru-Wada the New York Times Best Selling Author of 'Game of Shadows' penned the most eye opening and thought provoking book on concussions in the NFL to date.

"It really became apparent the incredible toll that this sport takes on the players who play it on the NFL level... the amount of force that's now created at the line of scrimmage has basically doubled over the years."